← 返回 JSSC 论文列表JSSC 2013第10期RF & Wireless
A Sub-nW Multi-stage Temperature Compensated T i m e rf o rU l t r a - L o w - P
提出一种多级门漏电流计时器，通过增强充电和温度补偿实现超低功耗和高精度时间同步。
660 pW功耗，31 ppm/°C温度敏感性，抖动降低8.1倍
超低功耗时间同步温度补偿门漏电流抖动优化
▸创新点1：多级门漏电流计时器设计，通过多级结构显著降低计时器的抖动，提升同步精度，RMS抖动降低8.1倍，同步不确定性减少4.1倍。
▸创新点2：增强充电技术降低抖动，采用快速负载电容充电和更宽的电压摆幅，有效减少计时器抖动，提升计时稳定性。
▸创新点3：动态泄漏调整温度补偿方案，提出闭环温度补偿机制，动态调整泄漏电流，实现31 ppm/°C的温度敏感性，显著提高计时器在温度变化下的稳定性。
▸创新点4：改进增益感应反相器设计，优化反相器增益特性，进一步提升计时器的响应速度和精度，支持每小时跟踪200 ms不确定性的低功耗需求。
Abstract
Accurate measurement of synchronization cy cle time
is required for ultra-low power wireless sensor nodes with strin-
gent power budgets. A multi-stage gate-leakage-based timer with
boosted charging is proposed to address the hig h jitter of prior-art
gate-leakage-based timers. The key approaches are faster load
capacitor charging, wider voltage swing, and an improved gain
sensing inverter. The proposed timer reduc es RMS jitter by 8.1×
and synchronization uncertainty by 4.1×, which allows hourl